Aim 2: Establish biological and behavioral efficacy of CARE+_Kenya. Longitudinal randomized controlled trial (RCT) in one urban and one rural AMAPATH clinic. Randomly assign HIV-positive adults with any missed ART or unprotected sex in last 6 months, >1 sex partner in last year, or sexually transmitted infection (STI)diagnosis in last 3 years, to intervention (n=125) or risk-assessment control (n=125) for baseline, 3, 6, and 9 month sessions. HIV transmission risk will be measured by self-reported unprotected sex with HIV negative/unknown partner, and trends in Chlamydia trachomatis, Neisseria gonorrhoeae, and T. vaginalis. ART adherence will be measured by HIV-1 viral load, electronic monitoring, pharmacy refill, self-report, and clinic attendance. Aim 3: Establish cost-effectiveness of CARE+_Kenya. At baseline, follow 100 patients at each of the two clinics to evaluate standard of care counseling, and collect time-spent and facility data to determine costs and unmet counseling need. Conduct economic evaluation to compare CARE+_Kenya vs. standard of care. If the RCT shows that the intervention reduces viral load and transmission risk behaviors, we will use a Bernoulli transmission dynamics model to estimate number of secondary HIV infections prevented; then create a cost-effectiveness model to calculate 2 incremental cost-effectiveness ratios: 1) cost per HIV infection averted, and 2) cost per daily adjusted life year saved. If CARE+_Kenya is efficacious and efficient, we will develop a proposal for a cluster-randomized trial to assess translational effectiveness of CARE+_Kenya throughout the AMPATH system. This is directly responsive to PA-08-107's call for innovative, integrated interventions that leverage ART roll-out infrastructure in international settings to benefit people living with HIV.